Slurry Centrifuge Scroll Conveyor
> A helical scroll conveyor inside decanter centrifuges for continuous slurry discharge in semiconductor wafer grinding operations. This part is essential for the centrifuge's function and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the scroll conveyor is exclusively for semiconductor production centrifuges
Parts for semiconductor manufacturing machinery may be classified under heading 84.86.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• > Classify the scroll conveyor as a part of a centrifuge under 8421.91.90, ensuring the invoice specifies its function
• If used in semiconductor manufacturing, verify whether heading 84.86 might apply
• Provide technical specifications to CBSA if requested
Related Products under Tariff item 8421.91.90
Centrifugal Dryer Basket for Wafers
> A perforated titanium basket designed for centrifugal dryers that remove process fluids from semiconductor wafers after polishing. This part is essential to the drying function of the centrifuge and is classified under tariff item 8421.91.90 as "other" parts of centrifuges, not being a drying chamber for clothes-dryers or furniture for clothes-dryers.
Centrifuge Rotor Assembly
> A replacement rotor assembly for laboratory centrifuges used in semiconductor wafer processing to separate particles from liquids during crystal boule preparation. This component is a part of a centrifuge and falls under tariff item 8421.91.90 as "other" parts, excluding drying chambers for clothes-dryers and related furniture.
Centrifuge Safety Shroud
> A carbon fiber safety shroud designed to contain rotor fragments in case of failure during high-speed semiconductor slurry separation. This protective part is integral to the safe operation of a centrifuge and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Crystal Puller Centrifuge Spindle
> A precision-ground spindle for driving rotors in centrifuges used with Czochralski crystal growers in semiconductor production. This component is a part of a centrifuge and falls under tariff item 8421.91.90 as "other" parts, not being a drying chamber for clothes-dryers.
High-G Centrifuge Bearing Housing
> An aluminum housing for precision bearings in high-G force centrifuges used for float zone crystal purification in semiconductors. This part maintains alignment under extreme speeds and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.
Lab-Scale Wafer Centrifuge Drive Shaft
> A coupled drive shaft for laboratory centrifuges processing small wafer batches in R&D crystal grinding. This part is essential for the centrifuge's operation and is classified under tariff item 8421.91.90 as "other" parts of centrifuges.